scholarly journals Recycling of rare earths from NdFeB magnets using a combined leaching/extraction system based on the acidity and thermomorphism of the ionic liquid [Hbet][Tf2N]

2015 ◽  
Vol 17 (4) ◽  
pp. 2150-2163 ◽  
Author(s):  
David Dupont ◽  
Koen Binnemans
Keyword(s):  
Ionic Liquid ◽  
Rare Earths ◽  
Extraction System ◽  
Recycling Process ◽  
Acidic Properties ◽  
Ndfeb Magnets ◽  
System P

A new recycling process was developed to recover rare earths from roasted NdFeB magnets using the thermomorphic and acidic properties of the ionic liquid [Hbet][Tf2N] to achieve a combined leaching/extraction system.

Extraction Behavior of Rare Earths in Ion Liquid Extraction System Using 1-Butyl-3-Methyl-Imidazolium Hexafluorophosphate and Benzoyl Acetone

2011 ◽  
Vol 335-336 ◽  
pp. 1428-1432 ◽  
Author(s):  
Zhong Wei Pan ◽  
Chang Ma ◽  
Ying Wu Zhang ◽  
Yu Xia Huang ◽  
Xing Lin Chen ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Rare Earth ◽  
Rare Earths ◽  
Liquid Extraction ◽  
Rare Earth Ions ◽  
Extraction System ◽  
Tetraacetic Acid ◽  
Extraction Percentage ◽  
Extraction Solvent ◽  
Extraction Behavior

The extraction behavior of five rare earth ions (RE3+) was investigated in ionic liquid (IL) extraction system using 1-butyl-3-methyl-imidazolium hexafluorophosphate ionic liquid ([Bmim]PF6) as extraction solvent and benzoyl acetone (HA) as extractant. The extraction percentage of RE3+ using [Bmim]PF6 was less than 8% without HA. When sufficient HA was included in IL phase, the extraction percentage of RE3+ could be higher than 98%. The extracted species in the RE3+-[Bmim]PF6-HA system was neutral REA3 and the recovery of RE3+ extracted into [Bmim]PF6 can be achieved using the mixture of hydrazine hydrate and ethylenediamine tetraacetic acid (EDTA) as stripping agent. [Bmim]PF6 can be recycled in the experiment.

A uranium capture strategy based on self-assembly in a hydroxyl-functionalized ionic liquid extraction system

2019 ◽  
Vol 55 (48) ◽  
pp. 6894-6897 ◽  
Author(s):  
Baihua Chen ◽  
Kaige Wu ◽  
Yanqiu Yang ◽  
Ning Wang ◽  
Yi Liu ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Self Assembly ◽  
Liquid Extraction ◽  
Extraction System ◽  
Functionalized Ionic Liquid ◽  
System P ◽  
One Step ◽  
The One

A novel and efficient uranium capture strategy based on self-assembly is developed in an ionic liquid extraction system, by which the one-step separation and solidification of uranium are realized.

Influence of radiation effect on extractability of an isobutyl-BTP/ionic liquid system: quantitative analysis and identification of radiolytic products

RSC Advances ◽  
2014 ◽  
Vol 4 (93) ◽  
pp. 51330-51333 ◽  
Author(s):  
Weijin Yuan ◽  
Yinyong Ao ◽  
Long Zhao ◽  
Maolin Zhai ◽  
Jing Peng ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Quantitative Analysis ◽  
Radiation Effect ◽  
Liquid System ◽  
Extraction System ◽  
System P

Approaches were established for assessing the influence of radiation effect on the extractability of the 2,6-di(5,6-diisobutyl-1,2,4-triazin-3-yl)pyridine (isobutyl-BTP)/1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl) imide ([C2mim][NTf2]) extraction system.

scholarly journals Separation of rare earths and other valuable metals from deep-eutectic solvents: a new alternative for the recycling of used NdFeB magnets

RSC Advances ◽  
2017 ◽  
Vol 7 (51) ◽  
pp. 32100-32113 ◽  
Author(s):  
Sofía Riaño ◽  
Martina Petranikova ◽  
Bieke Onghena ◽  
Tom Vander Hoogerstraete ◽  
Dipanjan Banerjee ◽  
...  
Keyword(s):  
Rare Earths ◽  
Deep Eutectic Solvent ◽  
Deep Eutectic Solvents ◽  
Extraction System ◽  
Ndfeb Magnets ◽  
Valuable Metals

Neodymium and dysprosium can be separated using a new extraction system based on a deep-eutectic solvent and Cyanex® 923 diluted in toluene.

Studies on Extraction Equilibrium of Rare Earths in Ion Liquid Extraction System Using 1-Butyl-3-Methyl-Imidazolium Hexafluorophosphate and 1-Phenyl-3-Methyl-4-Benzoyl-Pyrazolone-5

2012 ◽  
Vol 602-604 ◽  
pp. 887-891 ◽  
Author(s):  
Zhong Wei Pan ◽  
Jin Huo Lin ◽  
Wen Jie Li ◽  
Tian Ci Wu ◽  
Jin Ding Pan
Keyword(s):  
Ionic Liquid ◽  
Rare Earths ◽  
Equilibrium Constants ◽  
Complete Recovery ◽  
Liquid Extraction ◽  
Rare Earth Ions ◽  
Extraction System ◽  
Extraction Equilibrium ◽  
Extraction Solvent ◽  
Separation Factors

The extraction equilibrium of four rare earth ions (REn+, n = 3 or 4) was investigated in ionic liquid (IL) extraction system using 1-butyl-3-methyl-imidazolium hexafluorophosphate ([Bmim]PF6) ionic liquid as extraction solvent and 1-phenyl-3-methyl-4-benzoyl-pyrazolone-5 (HPMBP, HP) as extractant. The extraction percentage could be higher than 99%. The extracted species in the REn+-[Bmim]PF6-HP system was neutral REPn (n = 3 or 4) and complete recovery of REn+ extracted into [Bmim]PF6 can be achieved using diluent HCl as stripping agent. [Bmim]PF6 can be recycled in the experiment. The extraction equilibrium constants and the pH1/2 values of four REs and their separation factors between adjacent rare earths were estimated and comparatively studied.

scholarly journals Purification of crude In(OH)3 using the functionalized ionic liquid betainium bis(trifluoromethylsulfonyl)imide

2018 ◽  
Vol 20 (2) ◽  
pp. 412-424 ◽  
Author(s):  
Clio Deferm ◽  
Jan Luyten ◽  
Harald Oosterhof ◽  
Jan Fransaer ◽  
Koen Binnemans
Keyword(s):  
Ionic Liquid ◽  
Extraction System ◽  
Acidic Properties ◽  
Functionalized Ionic Liquid

A process was developed to purify crude In(OH)3 using a combined leaching/extraction system based on the thermomorphic and acidic properties of the ionic liquid [Hbet][Tf2N].

An ionic liquid-based synergistic extraction strategy for rare earths

2015 ◽  
Vol 17 (5) ◽  
pp. 2981-2993 ◽  
Author(s):  
Menghao Zhu ◽  
Junmei Zhao ◽  
Yingbo Li ◽  
Nada Mehio ◽  
Yuruo Qi ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Rare Earth ◽  
Physical Properties ◽  
Rare Earths ◽  
Synergistic Extraction ◽  
Extraction System ◽  
Rare Earth Nitrates ◽  
Extraction Selectivity

A sustainable IL-based synergistic extraction system for rare earth nitrates shows improved extraction selectivity and good physical properties.

Understanding the fundamentals of acid-induced ionic liquid-based aqueous biphasic system

2018 ◽  
Vol 20 (24) ◽  
pp. 16477-16484 ◽  
Author(s):  
Vijetha Mogilireddy ◽  
Matthieu Gras ◽  
Nicolas Schaeffer ◽  
Helena Passos ◽  
Lenka Svecova ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Biphasic System ◽  
Aqueous Biphasic System ◽  
System P ◽  
Aqueous Biphasic

This work describes the fundamentals of acid-induced ionic liquid-based ABS system and focuses on understanding the properties of such distinctive system.

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